Convertor lining thickness online testing method and device thereof

Abstract

The invention discloses a converter lining thickness online testing method and a device thereof. The testing method comprises the following steps: (1) establishing a converter value module by finite element software to perform a steady-state calculation on converter lining temperature and thickness so as to determine distribution of temperature in a converter lining, setting measuring points in a converter body, and obtaining a converter lining temperature-thickness reference table; (2) according to the determined measuring points in step 1, burying thermocouple temperature measuring devices in a lining permanent layer of the converter and the bottom of the converter body; (3) according to data acquired in step 2, combining the converter lining temperature-thickness reference table obtained in step 1 to backward calculate the converter lining thickness; and (4) determining whether to perform repair treatment on the converter lining or not according to the lining thickness obtained in step 3. The device adopted by the invention comprises the converter body (1), and the thermocouple temperature measuring device is arranged in the lining permanent layer (2) of the converter body (1). The method and the device have simple working procedures and high measuring accuracy, and can effectively improve the campaign length of the converter.

Description

technical field [0001] The invention relates to a method and a device for detecting the lining thickness of a converter used in a steelmaking process, in particular to a method and a device for on-line detecting the lining thickness of a converter. Background technique [0002] The converter body is composed of a furnace shell and a furnace lining, and the furnace lining is mainly composed of a working layer and a permanent layer. The working layer is directly in contact with the liquid metal, slag and furnace gas in the furnace, and is constantly subjected to physical, mechanical and chemical effects, and the furnace lining is continuously eroded; due to uneven erosion, it is easy to cause serious damage to the furnace lining, which makes the furnace shell local If the temperature is too high, the furnace shell will be seriously deformed, and even steel will break out, which will bring losses to production. Therefore, the continuous on-line rapid monitoring of furnace lini...

AI Technical Summary

Problems solved by technology

However, this technology has the following three key problems to be solved: (1) Optical and digital filtering needs to be extracted in the background of noise and strong interference, and the laser beam is prone to refraction, which affects the measurement results; (2) The timing and flow direction of each part of information And its coordination to the central control machine; (3) hot air flow, steel slag, etc. have a great influence on the measuring element, which greatly affects the accuracy of the measured value, and the maximum deviation under the same conditions is as high as 50mm

[0004] In addition, in the prior art, the online thickness measurement of the furnace lining is also carried out by means of infrared camera method, heat flow meter method, etc., and these methods also have the defect of low measurement accuracy.

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